12.1 GNU Guile Integration

GNU make may be built with support for GNU Guile as an embedded
extension language. Guile implements the Scheme language. A review
of GNU Guile and the Scheme language and its features is beyond the
scope of this manual: see the documentation for GNU Guile and Scheme.

You can determine if make contains support for Guile by
examining the .FEATURES variable; it will contain the word
guile if Guile support is available.

The Guile integration provides one new make function: guile.
The guile function takes one argument which is first expanded
by make in the normal fashion, then passed to the GNU Guile
evaluator. The result of the evaluator is converted into a string and
used as the expansion of the guile function in the makefile.

In addition, GNU make exposes Guile procedures for use in Guile
scripts.